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According to the Daily Star , Mercer had hoped to stay under radar at Frankland Prison in Durham, where he is currently serving his sentence.

But the ITV drama has reportedly made him a celebrity at the jail, dubbed 'Monster Mansion' because it houses some of Britain's most notorious killers.

In 2007, Mercer was a member of the Croxteth Crew.

At the age of 18, he was eventually jailed for a minimum of 22 years following a nine week trial.

Sean Mercer’s name was well-known by police - who received dozens of anonymous calls naming him as the murderer - but those surrounding him kept him protected and helped him to hide evidence.

During the trial, a court heard how he was involved in a turf ward with the Nogga Dogz from the Norris Green estate.

After the shooting, Mercer went into hiding with the held from fellow gang members and family.

Mercer was found days later and he claimed he was with friends watching a film when the shooting took place. However a court heard that his clothes were burnt and body washed with petrol to get rid of any evidence.

Another offender, Boy K - later revealed to be Dean Kelly - was also convicted of four related offences.

Kays, Yates and Coy received seven years each.

Yates sentenced was upped to 12 years after a referral by the Solicitor General to the Court of Appeal.

Kelly was sentenced to four years and Quinn to two years.

Recently, thug Wayne Brady - – said to be the target in the 2007 gang hit that went wrong – branded producers “rats” and ranted: “I’ll smash up their cameras.”

The Sunday People reports he even complained the heartbroken Jones family would be furious the drama was being aired 10 years on from 11-year-old Rhys’ shooting by a teenager on a BMX bike as he walked home from football practice in Croxteth.

But the young Everton fan’s parents, Melanie and Stephen, have said they are fully behind the programme.